list1 = [1,2,3,4,5]
for i in range(len(list1)):
    print(list1[i],end = '')

print()
print('----------------------')
for i in list1:
    print(i,end = '')

print()
print('----------------------')
list1.append(6)
print(list1)


list2= [7,8,9]
list1.extend(list2)
print(list1)
print(list2)
list1.insert(2,66)
print(list1)

list1.sort()#升序
print(list1)
list1.reverse()#倒序
print(list1)
list1.sort(reverse=True)

list3 = [14,22,3,4,5]
list4 = sorted(list3)  # 返回一个新列表，源列表不变
print(list3)
print(list4)

num = list4.pop()  #返回删除的元素
print(num)
print(list4)

set1 = {1,2,3,4,5}  # 无序的
for i in set1:
    print(i,end = ' ')

dict1 = {'name':'zhangsan','age':18}
dict1['sex'] = 'male'  #add
dict1['age'] = 19  #update
for key in dict1:
    print(key,end=' ')
for key,value in dict1.items():
    print(key,value)

print(dict1.keys())